You can do this, the performance is 1-20000, and you raise 10%.

20,000-40,000, you raise 15%

40,000-60,000, you raise 20%

Give it a range so that your boss will accept it more easily. Of course, the percentage of commission is just an example.

At the same time, this request depends on how you put it forward. The same thing, different opinions, the other party's acceptance is very different.

Good luck!